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In this paper, the impact of integration of FACTS devices viz. TCPS and TCSC on Automatic Generation Control (AGC) of a two area thermal-thermal deregulated power system have been studied in order to enhance the performance of responses such as frequency deviation and oscillation damping, deviation of tie line power between the areas and power generated by GENCOs. The comparison of results between...
Power flow study is the initial step which provides voltage magnitudes, phase angles, active and reactive power flows at respective buses under normal operating conditions. It helps in analyzing the current state of the power system and effective alternative options for expanding the existing system in order to meet with the increasing load demand. Contingency Analysis is also a major part of study...
Electric power systems are prone to various kinds of transient disturbances which exist only for a fraction of second and often trigger cascading failures. Hence it is important to detect and prevent them from spreading in time. Conventionally these events are prevented by deploying costly special protection systems (SPS). Unfortunately, in many cases SPSs mis-operate as they could not predict the...
In this work applications of Flexible AC Transmission System (FACTS) devices have been used in Automatic Generation Control (AGC) to improve the performance such as oscillation damping of transient response of power system in deregulated environment. The oscillations in frequency, tie power, generated power etc. are compared with conventional integral controller and FACTS devices. The responses improve...
In this paper a heuristics based method is proposed for optimal phasor measurement unit (PMU) placement in a power system. The objective is to determine the strategic locations for PMUs so that the power system is made completely observable with minimum number of PMUs. Zero injection buses are considered as virtual measurements in the proposed method. The optimal phasor measurement unit placement...
A fast computation technique of critical clearing time (CCT) has been proposed using an integrated approach. The technique combines the advantage of energy function based analysis and the time domain stability analysis method for calculating the CCT useful for removal of system contingency in a power network. This integrated approach computes the approximate CCT first using the energy function approach...
In this paper an efficient technique to solve optimal power flow problem considering both real and reactive sub-problems is proposed. The real power sub-problem is the traditional economic dispatch. The reactive power sub-problem is treated as real power transmission loss minimization problem. Particle swarm optimization method is used for solving the nonlinear optimization problems. While minimizing...
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